How to film yourself and your reaction at the same time

People searching for this want one of two things.

Some want to film what is in front of them while their own face is also recorded. A concert, a match, their kid taking a first step, a prank landing. Both cameras, one phone, one take.

Others want their face recorded over their own iPhone screen while they play a game or scroll something. That is a screen recording problem, and iOS handles it differently. The section further down covers it honestly, including the part Apple does not let you do.

This is the case both cameras were made for, and it takes about fifteen seconds to set up.

1. Open DualCapture and tap VIDEO on the mode toggle.
2. Pick a layout. Split screen stacked works for a phone held upright. Picture-in-picture keeps the scene full size with your face in a corner.
3. Drag the divider so your face gets the share of the frame it deserves. A third is usually plenty.
4. Use the swap arrows on the divider to put the back camera on top if the scene matters more than you do.
5. Set the rear zoom before you start. There is .5x, 1x, 2x and 3x.
6. Hit the red button.

Your reaction and the thing causing it are now locked to the same timeline. No syncing two clips by clapping, no guessing which second of your face matches which second of the action.

Here is the honest version, because a lot of pages lie about this.

iOS Screen Recording captures your screen and your microphone. It does not capture the front camera. Apple has never shipped a way to composite your face onto your own screen recording from inside the phone, and no third-party app can do it either, because iOS does not hand the screen buffer to other apps that way.

So you have two real options. Record the screen with Screen Recording, record your face separately, and lay one over the other in an editor. Or put the game on a second device, a TV, a laptop, and point the rear camera at that screen while the front camera catches your face. The second route gives you a finished video straight out of the phone with nothing to edit.

Creators reacting to other people's videos mostly use the second route. A tablet propped on a desk, the phone on a small stand, and both cameras rolling.

Put the camera at eye height. Filming up your own nose while the bottom half shows a concert is the single most common way these videos go wrong.

Give your face less room than you think. Viewers look at the action first and check your face to see how to feel about it. A third of the frame reads as generous.

Watch what is behind you. The front camera sees your ceiling, your laundry and your open door, and unlike a webcam there is no blur to hide it.

Get the audio from the right side. The phone picks up everything, so if the moment is loud and you are commenting quietly, you will be buried. Speak up or move closer.

Because DualCapture saves the front camera, the back camera and the merged composite as separate files, a take is rarely a total loss. Your reaction was flat for the first eight seconds but the action was perfect? Use the back camera file alone for that stretch and cut to the merged version when your face gets good.

You also get a vertical cut for Reels and a wide cut for full-screen playback from the same recording, so posting to two platforms does not mean exporting twice. The same workflow is what makes it useful as a reaction video app.